gistfile1.rb

class Resolution
    attr_accessor :x, :y 
    def initialize(x, y)
        @x = x
        @y = y
    end
    
    def self.string(s)
        if s.include?('x')
            x, y = s.split('x')
        else
            x, y = s.split("\u{00D7}")
        end
        new(Integer(x),Integer(y))
    end
    
    def to_s
        "#{@x} x #{@y}"
    end
end